I bought the Poolbuster CG from PoolDr.com last spring. Used it exclusivily to clean my newly installed 18x36 vinly inground keyhole pool. After the cement apron was installed I had a ton of stuff in that pool, including some small rocks. Used it a couple of times a week from late May til early October and it worked great. This year I'm going to buy either a Blue Pearl or Blue Diamond. You can use the poolbuster to clean a pool the size of mine, but....you better be retired like I am. Takes a bit of time. This year I'll just use it for doing the stairs or a quick touch up. I think the CG is a more powerful model and comes with extra bags. Mine came with an extra charger, which unfortunately didn't work at all. I just threw it in the trash. I suppose I could've asked for a replacement but one seemed enough.